18 TIMES! FASTER THAN CLASSIC CYANOTYPE! "Blue flash 2 step formula"

Correction the developer is "Potassium ferricyanide"

This is an ultra fast cyanotype formula inspired from a 2 step method here

   • Saidane's Rapid Cyanotype process  

This is an ultra fast 2 step formula I have named "Blue Flash" which is 18! times faster than classic cyanotype. It consists of a sensitizer and developer. The sensitizer is a 20% ferric ammonia oxalate solution and the developer is a 5% Potassium ferricyanide solution acidified to 3-4 PH with sulfamic acid. Ferric ammonia oxalate is already acidic which allows it to work on its own with less than desirable papers, it is also much more absorbent than classic cyanotype for coating although you must be sure not to over saturate the paper otherwise green crystals will form while drying which will ruin the picture. This is not intended to be a replacement for classic cyanotype but a tool to use, its faster exposure will hopefully work well for UV enlargements as well as "in camera" cyanotypes for future videos.